<<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item>数据统计</el-breadcrumb-item>
          <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片区域 -->
        <el-card>
            <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
            <div id="main" style="width: 800px; height:400px;"></div>
        </el-card>
    </div>
</template>

<script>
//导入 echatrs
import echarts from 'echarts'
import _ from 'lodash'

export default {
    date(){
        return{
            //需要合并的对象    
            options: {
                title: {
                    text: '用户来源'
                },
                tooltip: {
                    trigger: 'axis',
                    axisPointer: {
                    type: 'cross',
                    label: {
                        backgroundColor: '#E9EEF3'
                    }
                    }
                },
                grid: {
                    left: '3%',
                    right: '4%',
                    bottom: '3%',
                    containLabel: true
                },
                xAxis: [
                    {
                    boundaryGap: false
                    }
                ],
                yAxis: [
                    {
                    type: 'value'
                    }
                ]
                }
        }
    },

    created() {
        
    },

    async mounted(){
        // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));
        const { data:res } = await this.$http.get('reports/type/1')
        if(res.meta.status !== 200 ) {
            return this.$message.error('获取折线图数据失败!')
        }

        const result = _.merge(res.data, this.options)
        myChart.setOption(result)
    },

    methods: {
        
    },
}
</script>

<style lang="less" scoped>

</style>